| Tail Number / N-Number | N9MR |
| Manufacturer | RENDEL-MILTENBERGER |
| Model | THORP T-18 |
| Year Built | 1982 |
| Manufacturer's Serial Number | 544 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Type of Registrant | Individual |
| Owner Name | WELSH KEITH L |
| Street | 22476 E US HIGHWAY 40 |
| City | MARSHALL |
| State | IL |
| Zip Code | 62441-4060 |
| Region | Great Lakes |
| County | Clark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1983-02-24 |
| Certificate Issue Date | 2017-10-27 |
| Last Action Date | 2020-05-20 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 53065635 |
| Mode S Code Hex | AC6B9D |